Brake shoe



Feb. 17, 193-1.

R. F. KOHR BRAKE'SHOE Filed May 5, 1929 INVENTOR.

' ATTO EY Patented Feb. 17,1931 i 7 UNITED rolm'rronor scorn BEND,innmne, A oo'nsone'rion or new JERSEY BRAKE SHOE ROBERTF. KOI-IR, orSOUTH BEND, innmim, ssrenon To TEE STUDEBAKER con- Original applicationfiled m 1928, Serial No. 276,636. Divided m nus application filed May3,1929,

,l' seamjvdzeai ae' 1 This invention relatesto brakes for motor.

vehicles and particularly to brake shoes therefor, and is a divisi'onofmyicopending application Serial No. 276,686 filed May 10,

- The principal object of my invention is to provide a brake elementcomprisingafriction member having a rigid reinforcement fora'greaterportion of its length and a re- 10 silient end portion-forthe-remainder of its length. v v V V V A further object is to provide abrake shoe other adjacent ends being provided with 1 means to provide anadj ustment'for the brake element. H 7

A still further object is to provide a brake shoe which is flexible atone endthereof and which has reinforcing means at the opposite endthereof to providea rigid. structure at that end of the shoe. i v

' These being amongthe obj ects-of the present invention; the sameconsistsv of certain features of construction and combination of partsto behereinafter described with reference to the accompanying drawing,and then 30 claimed, having the 'above and other 7 objects in viewtrate's a suitable embodiment of the present invention, i

Figure 1 is a section taken'just insidethe brake drum of a brakeincorporated in'the left front wheel of a motor vehicle, showing thebrake element and brake'operatingmechanism therefor in elevation. Figure2-is a fragmentary sectional View taken on the line 22 of Figure 1showing the brake shoe in transverse section;

Figure 3 is a fragmentary perspective view showing the reinforced end ofthe brake shoe. Referring to the accompanying drawing throughouttheseveral views, the embodiment.

of this invention is shown forthe purpose of ilreference .may' be had tomy copending "application :Serial :No. 276,636-filed May 10 1928 fordetails of construction not specifical- 1y described inthisappli-cation. V The brake drum 1 0'is secured in any suitable manneron a wheel hub, not shown, adapted to be rotatably mounted on the wheelspindle 11, A dust cover or backing plate 12 is secured by bolts-13 tothe steering knuckle 1a in concentricrelation with the drum 10;and asclose as possible thereto to prevent dirt and foreign particles fromgetting into thebrake mechanlsmand ingu-r-mg the operating parts;

The, mechanism for operating the brakes Willjbe briefly described andcomprises an L-shaped bracket-15 secured by rivets 16 to thebackingplate 12 andhas one leg thereof extending outwardly perpendicular to thebacking plate12 to provide a stop 17 for the ends of the brake elementwhich is to be hereinafter described. The brake element comprises twosemi-circular resilient bands 18 and19,'each of which is provided'withapair of spaced radial stifiening ribs 20 and 21 respectively. The ribspreferably ,vary in depth and extend for the greater part of, thelength-of the band and-are weldedo-r otherwise secured thereto in anysuitable manner. Asith'e bands 18 and-c1 9 and the reinforcementstherefor are identical in construction EOHIlZY OIIQ'OfthG same Willberesented in -de-' In the accompany ng drawing which illu's-f tail. 7 Thefreeend of each band preferably extends {b yond the end oft the ribsandis bent radially inwardly into abutting relationship with the ends ofthe ribs to provide an abutment face 22. )The stiffening ribs 20 and 21vary in depth andpreferablyare ofgreatest depth ,intermediatelihje endsthereof to providea support for-apart ofthe, brake operat' or a :greatepart of their lengths,- the ame -'-:bei1 1gnectaingnlar and resilient-,-f0r-1the= rcg V ma1nder-of their lengths It;is=to ;be -under-- 1;- inwhich like numerals refer to like'parts,

s ee tih wev n, that the s rengthe ing "r for the friction members maybe formed if 0r hys 'cnrinsclhae Secured adjacent to the resilient endsof the members 18 and 19 are brackets 24 and.

25 interconnected by a double ended screw 26 which provides means foradjusting the length of thebrake element to provide an ing or decreasingthe circumferential length thereof and to provide means for rigidly interconnecting the two friction and 19.

When the brake element is innormal inoperative position, the abutmentfaces 22 abut againstopposite sides of the stop member 17, the samebeing held in that position and out of engagement with the brakedrum 12by means of the springs 27, 28 and 29, the spring 29 being connected atits opposite end with the U-shaped links 30 and 31-.

The brake element is preferably moved into engagement with the brakedrum 10 by means of a toggle mechanism which comprises the links 30 and31, the adjacent ends members 18 of which are pivoted together by meansof a pin 32. I The opposite ends .30 and 31 are piv oted by means ofpins 33 and 34 to T-shaped brackets 35 and 36 secured in any suitablemanner to the bands 18 and 19 and positioned between the ribs 2 0 and21. A link 37 is pivoted at on-eend to the pin 32 and extends radiallyinwardly therefrom as shown in Figure 1. The free end of this link 37 ispivoted by means of a pin38 to a lever 39 which is rigidly secured atone end'to' a rotatable shaft 40 extending through the backing plate 12.lVhen the shaft 40 is rotated as by means of afoot pedal or brake lever(not shown) the arm 39 will be moved in an anticlockwise diagainst theends of sand radial members, and

7 means adjustably interconnecting the opposite ends of said bands.

rection as viewed in Figure 1 whereupon the links 30 and 31 will-bemoved to expand the brake elements intoengagement with the brake drum toretard orstopmovement of j v I lstgday of May, 1929.

the vehicle.

The reinforcing members 20 21 for the brake elements 18 and 19 arepreferably of the smallest channel section adjacent to the brackets 24and 25, the channels increasing in depth upto the pivot pins'33 and 34to the pivot pins which extend through the reinforcing flanges andbrackets 35 or 36 to made in the specific embodiment of the inventiondescribed without departing from the spirit and substance of theinvention, the

, scope of which is commensurate with the appended claims.

What I claim is 1 1. A brake element for a vehicle brake comprising asemi-circular friction member having an integral rigid reinforcement fora greater portionof its length 'and a'resilient accurate ad ustment ofthe same for increas- 5 end portion for the remainder of its length.

'2. A brake element for a vehicle brake compr s ng a palrof semi-crcular fr ction members havlng rigld radial reinforcements for thegreater portion of their lengths, and

:resilient portions for the remainder of their lengths, and meansadjustably interconnecting said resilient portions.

3. A brake element for vehicle brake comprising a pair of independentsemi-circular friction members having rigid channel bers for a greaterpart of its length to permit a resilient projecting end, and meansinterconnecting said resilient projecting ends:

5. A brake shoe comprising a resilient end portion and a channel shapedend portion,

"said' channel portion being of greatest depth intermediate the endsthereof.

'members' being of greatest depth intermedi ate theirv ends, an abutmentmember formed integrally with each of said. bands abutting Signed by meat South Bend, Indiana, this ROBERT KOHR.

-t11ereby provide rigidity and Strength for 1 thereby provide a properpivotal suppqrbf the U-shaped links 30 or 31. The depth of the channels'maythen be decreased toward the adjacent ends of the brakeshoe and needbe of only sufficient depth to receive the turned over end 22-to providean abutmenttherefor.

While I have shown one embodimentof a brake shoe constructiom'it is tobe under-"' stood, however, that certain changes may be

